SpeciesSun Bear
Vulnerable

Sun Bear

Helarctos malayanus

About the Sun Bear

The sun bear (Helarctos malayanus) is the smallest of the world's eight bear species, typically weighing between 25 and 65 kilograms, with a compact body built for life in the lowland and hill forests of Southeast Asia. Named for the pale, crescent-shaped chest patch that varies in shape between individuals, sun bears are the most arboreal of all bears, spending significant time in the forest canopy where they sleep, sunbathe, and forage.

Listed as Vulnerable on the IUCN Red List, the sun bear has lost a substantial portion of its forest habitat to agricultural conversion, particularly to oil palm and rubber plantations across Borneo and Sumatra. Poaching for the illegal wildlife trade, including the extraction of bile from captive bears for use in traditional medicine, remains a serious pressure alongside deforestation. Ecologically, sun bears are important seed dispersers and play a key role in forest structure by tearing apart rotting logs to reach insects, which accelerates nutrient cycling and creates microhabitats used by other species.

Things worth knowing

  • Sun bears have the longest tongue relative to body size of any bear species, reaching up to 25 centimeters, which they use to extract honey, termites, and beetle larvae from tight crevices.
  • Their loose, baggy skin around the neck and shoulders allows them to twist inside their own hide and bite back at a predator that has grabbed them.
  • Sun bears are the only bear species native exclusively to tropical rainforest, and they do not hibernate because food is available year-round in equatorial climates.
  • The Bornean Sun Bear Conservation Centre in Sabah, Malaysia, is one of the only facilities in the world dedicated specifically to the rehabilitation and release of rescued sun bears.
  • Sun bear chest patches are unique to each individual, functioning similarly to a fingerprint, which researchers use for photo-identification in the wild.
  • Unlike most bears, sun bears show no strong seasonal breeding pattern, and females give birth to one or two cubs that remain dependent on their mother for up to three years.
Who protects them

0 organizations protect the Sun Bear

No projects have listed this species yet. If you run a project that protects the Sun Bear, you can add it to Wildlife Connect.